filament/third_party/spirv-tools/FILAMENT_README.md at 5343d504c4151d6abd5c2b0abbec0014d9119fff

Files

Philip Rideout 88dc25229b Update spirv-tools to get new code folding optimization.

This change includes a fix for an issue we filed against spirv-tools:
https://github.com/KhronosGroup/SPIRV-Tools/issues/4371

So, it should reduce the number of extraneous matrix copies in finalized
GLSL code.

I did quick size total of all filamat files (*) before and after this
update, it went from 11.3 MB to 11.1 MB.

(*) All backends are enabled, includes built-in Filament shaders and
gltfio ubershaders.

2022-05-26 11:40:38 -07:00

1.1 KiB

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When updating spirv-tools to a new version there are several CMakeLists.txt files that need to patched with Filament specific changes. This can be done by running the following command at Filament's root:

git apply third_party/spirv-tools/filament-specific-changes.patch

The following procedure can be used to update spirv-tools. Note that there is a secondary repository that needs to be downloaded (spirv-headers).

curl -L https://github.com/KhronosGroup/spirv-tools/archive/master.zip > master.zip
unzip master.zip
rsync -r SPIRV-Tools-master/ spirv-tools/ --delete
rm -rf SPIRV-Tools-master master.zip
curl -L https://github.com/KhronosGroup/spirv-headers/archive/master.zip > master.zip
unzip master.zip
mv SPIRV-Headers-master/ spirv-tools/external/spirv-headers
rm master.zip

git add spirv-tools

The patch file also edits the .gitignore to allow spirv-headers to be committed.

Finally, remember to bring back the Filament-specific changes in CMakeLists.

To restore this file and the patch file do:

git checkout main spirv-tools/FILAMENT_README.md
git checkout main spirv-tools/filament-specific-changes.patch

1.1 KiB Raw Blame History

1.1 KiB

Raw Blame History